Experimental study on use fly ash in underground construction concrete
- Cơ quan:1 Department of Underground and Mining Construction, Faculty of Civil Engineering, Hanoi, Viet Nam 2 Master student K38, Hanoi University of Mining and Geology, Viet Nam 3 Vinacomin industry investment consulting joint stock company
- Từ khóa: Compressive strength,Flexural strength, Fly ash, Experimental study; Underground construction concrete.
- Nhận bài: 21-02-2020
- Chấp nhận: 23-05-2020
- Đăng online: 30-06-2020
- Lĩnh vực: Mỏ
Fly ash utilization in concrete as partial replacement of cement is gaining importance day by day. In Vietnam, fly ash has been used to as roller compacted concrete of Son La hydroelectricity, rural road concrete and unburnt bricks. However, they have not been used in the rock/soil support of underground coal mines. Now, concrete insert plates with steel arches are the biggest proportion of the type of current structural support in underground mining (about 70÷80%). Concrete insert plates is one part of the concrete insert plates are responsible for closing the gap between the SVP steel frames in drift and the dug evenly distributing the pressure of rock and soil on SVP steel frames, preventing roof landslides and sidewalls. This paper studies the use of fly ash in concrete, cement is replaced partially by fly ash in underground construction concrete. In this experimental work concrete mix prepared with replacement of fly ash by 0%, and 20%. Effect of fly ash on compressive strength and flexural strength of underground construction concrete are studied. To study the impact of partial replacement of cement by fly ash on making concrete insert plate of SVP steel frame in undergound mines.
. Dang Van Kien, Vo Trong Hung, Do Ngoc Anh, PHAM Tuan Anh. Research and manufacture reinforced concrete furnace insert plates from ash slag of thermal power plants in underground mines in Vietnam. National Mining Science & Technology Workshop 2019. Industry and Trade Publishing House, August 2019. ISBN. 978-604-931-849-8.
. Kosalram R. et al , Ph.D., P.Eng., Professor of Civil Engineering, University of New Brunswick. Mix Design of Fly Ash based concrete using
. DOE Method sustain. International journal for trends in engineering & technology volume 10 issue 2 – november 2015 - ISSN: 2349 – 9303.
. Michael Thomas, Ph.D., P.Eng. Optimizing the Use of Fly Ash in Concrete Microstructural approach in damage. The 2nd international conference on dynamics and control. January, 2007, 23-26, Norfolk, Janpan, 377-387 .
. Amit Ahirwar et al. Laboratory Analysis of Fly Ash Mix Cement Concrete for Rigid
. Pavement. Int. Journal of Engineering Research and Applications. ISSN : 2248-9622, Vol. 5, Issue 2, ( Part -2) February 2015, pp.86-91.
Các bài báo khác